for the bridge:
{-------x2-------------------|
|------------------------------------------------------------|
|------------------------------------------------------------|
|-4h5-2---4h5-2---4h5-2--4-4h5-2--4---4h5-2--4-4h5-2--4------|
|------3-------3-------3--------3----------3--------3--------|
|------------------------------------------------------------|
|------------------------------------------------------------|

|----------------------------------------------------------|
|----------20----------20-17-----------20----------20-17p15|
|-----17h19-------17h19-----------17h19-------17h19--------|
|17h19-------17h19-----------17h19-------17h19-------------|
|----------------------------------------------------------|
|----------------------------------------------------------|

The first line you play through only once, with the exception of the part i bracketed 
which you play twice.  After those brackets, you just play it through.  The second line is 
through 3 times.